Genomic history of the origin and domestication of common bean unveils its closest sister species

Background: Modern civilization depends on only a few plant species for its nourishment. These crops were derived via several thousands of years of human selection that transformed wild ancestors into high-yielding domesticated descendants. Among cultivated plants, common bean (Phaseolus vulgaris L....

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Aguilar, Orlando Mario
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Biología
Adaptive traits
Common bean
Domestication
Genomic introgression
Speciation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87505
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87505
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Adaptive traits
Common bean
Domestication
Genomic introgression
Speciation
spellingShingle Biología
Adaptive traits
Common bean
Domestication
Genomic introgression
Speciation
Aguilar, Orlando Mario
Genomic history of the origin and domestication of common bean unveils its closest sister species
topic_facet Biología
Adaptive traits
Common bean
Domestication
Genomic introgression
Speciation
description Background: Modern civilization depends on only a few plant species for its nourishment. These crops were derived via several thousands of years of human selection that transformed wild ancestors into high-yielding domesticated descendants. Among cultivated plants, common bean (Phaseolus vulgaris L.) is the most important grain legume. Yet, our understanding of the origins and concurrent shaping of the genome of this crop plant is limited. Results: We sequenced the genomes of 29 accessions representing 12 Phaseolus species. Single nucleotide polymorphism-based phylogenomic analyses, using both the nuclear and chloroplast genomes, allowed us to detect a speciation event, a finding further supported by metabolite profiling. In addition, we identified ~1200 protein coding genes (PCGs) and ~100 long non-coding RNAs with domestication-associated haplotypes. Finally, we describe asymmetric introgression events occurring among common bean subpopulations in Mesoamerica and across hemispheres. Conclusions: We uncover an unpredicted speciation event in the tropical Andes that gave rise to a sibling species, formerly considered the "wild ancestor" of P. vulgaris, which diverged before the split of the Mesoamerican and Andean P. vulgaris gene pools. Further, we identify haplotypes strongly associated with genes underlying the emergence of domestication traits. Our findings also reveal the capacity of a predominantly autogamous plant to outcross and fix loci from different populations, even from distant species, which led to the acquisition by domesticated beans of adaptive traits from wild relatives. The occurrence of such adaptive introgressions should be exploited to accelerate breeding programs in the near future.
format Articulo
Articulo
author Aguilar, Orlando Mario
author_facet Aguilar, Orlando Mario
author_sort Aguilar, Orlando Mario
title Genomic history of the origin and domestication of common bean unveils its closest sister species
title_short Genomic history of the origin and domestication of common bean unveils its closest sister species
title_full Genomic history of the origin and domestication of common bean unveils its closest sister species
title_fullStr Genomic history of the origin and domestication of common bean unveils its closest sister species
title_full_unstemmed Genomic history of the origin and domestication of common bean unveils its closest sister species
title_sort genomic history of the origin and domestication of common bean unveils its closest sister species
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87505
work_keys_str_mv AT aguilarorlandomario genomichistoryoftheoriginanddomesticationofcommonbeanunveilsitsclosestsisterspecies
bdutipo_str Repositorios
_version_ 1764820490134749185

Ejemplares similares